Hello! FYI there is an issue with TLS 1.3 Early data in OpenSSL –
https://github.com/openssl/openssl/issues/7757

So maybe you would want to consider ignoring Early data with HTTP/2 and
OpenSSL. Or try to fix the problem on the nginx side, i.e. do not call
SSL_read_early_data() until all pending data is written with
SSL_write_early_data().